/*******************************************************************************
 ** Name: help_index.cpp                                                             **
 ** Description:                                                              **
 **                                                                           **
 ** Open Source Initiative (OSI) Approved 2-clause BSD License                **
 **                                                                           **
 **  Copyright (c) 2009-2010 Barry "Gian" James  <bjames@munixos.net>         **
 **  All rights reserved.                                                     **
 **                                                                           **
 **  Redistribution and use in source and binary forms, with or without       **
 **  modification, are permitted provided that the following conditions are   **
 **  met:                                                                     **
 **                                                                           **
 **  * Redistributions of source code must retain the above copyright notice, **
 **    this list of conditions and the following disclaimer.                  **
 **  * Redistributions in binary form must reproduce the above copyright      **
 **    notice, this list of conditions and the following disclaimer in the    **
 **    documentation and/or other materials provided with the distribution.   **
 **                                                                           **
 **  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS      **
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED **
 ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A           **
 ** PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT        **
 ** HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,    **
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED  **
 ** TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR    **
 ** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    **
 ** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING      **
 ** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS        **
 ** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              **
 **                                                                           **
 ******************************************************************************/
// Created on March 17, 2010, 8:21 AM
// Modified $Date$ by $Author$
#define help_index_cpp_ID   "$Id$"

#include <boost/program_options.hpp>
#include <iostream>
#include <fstream>

namespace po = boost::program_options;

int main(int argc, char ** argv)
{
	po::options_description desc("Allowable options");
	desc.add_options()
		("help", "produce this help message")
		("infile", po::value<std::string>(), "input help file")
		("outfile", po::value<std::string>(), "output index file")
	;

	std::string	infile = "help.txt", outfile = "help.idx";
	po::variables_map vm;
	po:store(po::parse_command_line(argc,argv,desc),vm);
	po::notify(vm);

	if (vm.count("help")) {
		std::cout << desc << std::endl;
		return 0;
	}
	if (vm.count("infile")) {
		infile = vm["infile"].as<std::string>();
	}
	if (vm.count("outfile")) {
		outfile = vm["outfile"].as<std::string>();
	}

	std::ifstream	ifs(infile.data());
	std::ofstream	ofs(outfile.data());

	if (!ifs.good()) {
		std::cout << "Error opening " << infile << std::endl;
		return -1;
	}
	ofs << "; Help File Index v1.0\n";
	ofs << "; Auto-generated on " << std::endl;

	char buff[256], * ptr;
	int idx = 0;
	while(!ifs.eof()) {
		ifs.getline(buff,256);
		if (buff[0] == '$') {
			ptr = buff;
			int skg = (ifs.tellg() - strlen(buff) - 1);
			ofs << ++ptr << ":" << skg << std::endl;
			++idx;
		}
	}
	ifs.close();
	ofs.close();

	return idx;
}
